Two-time Olympic gold medallist Guillermo Rigondeaux (R), who defected to the US from Cuba in 2007, knocks down Teon Kennedy (L) of the US during their WBA Super Bantamweight Championship at the MGM Grand Arena on June 9, 2012 in Las Vegas, Nevada. Rigondeaux floored Kennedy five times before the referee stopped the fight to retain his crown on a fifth round TKO. AFP/ JOE KLAMAR